15338294640 has 60 divisors (see below), whose sum is σ = 51511108584. Its totient is φ = 4090211712.

The previous prime is 15338294623. The next prime is 15338294651. The reversal of 15338294640 is 4649283351.

15338294640 is a `hidden beast` number, since 153 + 38 + 2 + 9 + 464 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10650874 + ... + 10652313.

Almost surely, 2^15338294640 is an apocalyptic number.

15338294640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15338294640 is an abundant number, since it is smaller than the sum of its proper divisors (36172813944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15338294640 is a wasteful number, since it uses less digits than its factorization.

15338294640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21303206 (or 21303197 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 15338294640 in words is "fifteen billion, three hundred thirty-eight million, two hundred ninety-four thousand, six hundred forty".